While sitting around fire pit in my back yard with my husband and cousin, we noticed a light that appeared to be floating in the air. Directly behind it was a a large black diamond like shaped object with another floating light following behind. It was quiet and the size of at least a football field . Stealth like but much larger. My husband said it had glowing lights on top. I just remember it as a black shadow but the lights may have given the appearance of a shadow from the bottom. We were trying to figure out what it was. My feeling was disbelief. It was like swimming underneath water and something huge from above casts a shadow you. We watched as it was flying north from the river then veered off towards the east until we could no longer see it.